Annotation of sys/arch/vax/include/pte.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pte.h,v 1.10 2006/07/25 21:05:31 miod Exp $ */
2: /* $NetBSD: pte.h,v 1.21 2005/12/24 22:45:40 perry Exp $ */
3:
4: /*
5: * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed at Ludd, University of Lule}.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
34: #ifndef _VAX_PTE_H_
35: #define _VAX_PTE_H_
36:
37: #ifndef _LOCORE
38:
39: typedef u_int32_t pt_entry_t; /* Mach page table entry */
40:
41: #endif /* _LOCORE */
42:
43: #define PT_ENTRY_NULL ((pt_entry_t *) 0)
44:
45: #define PG_V 0x80000000
46: #define PG_NV 0x00000000
47: #define PG_PROT 0x78000000
48: #define PG_RW 0x20000000
49: #define PG_KW 0x10000000
50: #define PG_KR 0x18000000
51: #define PG_URKW 0x70000000
52: #define PG_RO 0x78000000
53: #define PG_NONE 0x00000000
54: #define PG_M 0x04000000
55: #define PG_W 0x01000000
56: #define PG_SREF 0x00800000
57: #define PG_ILLEGAL 0x00600000
58: #define PG_FRAME 0x001fffff
59: #define PG_PFNUM(x) (((unsigned long)(x) & 0x3ffffe00) >> VAX_PGSHIFT)
60:
61: #ifndef _LOCORE
62: extern pt_entry_t *Sysmap;
63: /*
64: * Kernel virtual address to page table entry and to physical address.
65: */
66: #endif
67:
68: #ifdef __ELF__
69: #define VAX_SYSMAP "Sysmap"
70: #else
71: #define VAX_SYSMAP "_Sysmap"
72: #endif
73:
74: #ifdef __GNUC__
75: #define kvtopte(va) ({ \
76: pt_entry_t *r; \
77: __asm("extzv $9,$21,%1,%0;moval *" VAX_SYSMAP "[%0],%0" : "=r"(r) : "g"(va)); \
78: r; \
79: })
80: #define kvtophys(va) ({ \
81: paddr_t r; \
82: __asm("extzv $9,$21,%1,%0;ashl $9,*" VAX_SYSMAP "[%0],%0;insv %1,$0,$9,%0" \
83: : "=&r"(r) : "g"(va) : "cc"); \
84: r; \
85: })
86: #else /* __GNUC__ */
87: #define kvtopte(va) (&Sysmap[PG_PFNUM(va)])
88: #define kvtophys(va) \
89: (((*kvtopte(va) & PG_FRAME) << VAX_PGSHIFT) | ((int)(va) & VAX_PGOFSET))
90: #endif /* __GNUC__ */
91: #define uvtopte(va, pcb) \
92: (((vaddr_t)(va) < 0x40000000) ? \
93: &(((pcb)->P0BR)[PG_PFNUM(va)]) : \
94: &(((pcb)->P1BR)[PG_PFNUM(va)]))
95:
96: #endif
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